Answer:
4.21 mol of SnO₂
Explanation:
The balance chemical equation for this single replacement reaction is as follow;
SnO₂ + 2 H₂ → Sn + 2 H₂O
Step 1: <u>Calculate moles of Sn as:</u>
Moles = Mass / A.Mass
Moles = 500 g / 118.71 g/mol
Moles = 4.21 moles
Step 2: <u>Find out moles of SnO₂ as,</u>
According to balance equation,
1 mole of Sn is produced by = 1 mole of SnO₂
So,
4.21 moles of Sn will be produced by = X moles of SnO₂
Solving for X,
X = 1 mol × 4.21 mol / 1 mol
X = 4.21 mol of SnO₂
Answer:
B. Sun
Explanation:
While what exactly qualifies as "living" can be contested when talking about viruses, bacteria, etc. It is commonly accepted that Bacteria, Fungi and Animals (Cows) are all organisms. The Sun, however is no organism.
Answer:
The answer will be approximately 1.0L
Explanation:
The problem has not been properly specified. You could have specified a gas in a PISTON, whose volume would decrease with increased pressure, and increase with increased temperature.
For such a system, we would use the
combined gas law:
=
=
=
1.0L
Answer:
NH₄Cl (aq) + NaOH (aq) -> NaCl (aq) + H₂O (l) + NH₃ (g)
(NH₄)₂CO₃ (aq) + 2KOH (aq) -> K₂CO₃ (aq) + 2H₂O (l) + 2NH₃(g)
NH₄NO₃ (aq) + LiOH (aq) -> LiNO₃ (aq) + H₂O (l) + NH₃ (g)
Explanation:
The gas liberated when an alkali reacts with an ammonium salt is NH₃ (ammonia), not CO₂.
